ABSTRACT
Los defectos óseos acetabulares son frecuentes en revisión de antroplastia total de cadera. Pueden requerirse aloinjertos masivos y anillos de recontrucción para restituir el acetábulo. entre 1997 y 2003 colocamos dieciocho anillos de reconstrucción acetabular con injerto óseo en diecisiete pacientes con edad promedio de 60,67 años. Se hizo seguimiento a trece pacientes (catorce caderas) por 2,36 años en promedio. Usamos dos mallas, dos anillos tipo Müller, siete cajas tipo Ganz y tres tipo Burch-Schneider. No observamos aflojamiento de los anillos y copas acetabulares utilizados. El injerto óseo se integró en once casos. Los pacientes mejoraron en una media de 23,23 puntos en la escala de Harris y 31,57 puntos en la escala de WOMAC. Diez de trece pacientes (76,92) estuvieron satisfechos con la cirugía. Nuestros resultados nos permiten concluir que los anillos de reforzamiento acetabular con injerto óseo producen resultados satisfactorios en el manejo de defectos óseos acetabulares.
Subject(s)
Humans , Male , Female , Arthroplasty , Acetabularia , Hip/surgery , Bone Transplantation , Venezuela , TraumatologyABSTRACT
Ultraweak photon emission of dark-incubated A. acetabulum cells were measured with the use of a sensitive electronphotomultiplier of the Hamamatsu 550 type. The photon count series were subjected to Fourier analysis for 2-1020 sec period range. The average level of photon emission in samples containing 50 cells was approximately. 40% above background. Cell cultures were prepared at least 24 hr before the photon emission measurements and kept un-disturbed ("established cultures"). This paper reports results of Fourier analysis of a number of samples of Acetabularia cells. In a single population cells periodicity of light emission was not defined directly from Fourier transformation. A large number of analyses, however, if they are combined and compared with background data, reveal a cell-culture specific frequency pattern. The results suggest the idea that established cell-cultures are characterized by higher intensities of long period (minutes) oscillations occurs, while a relative decrease was observed in the short period (few seconds) range. The long period oscillations were not detected in cell cultures that were prepared within 1 hr before the photon emission measurements. It is concluded that Fourier analysis of ultraweak photon emission, even with relatively low signals, appears to be possible. It may serve as a non-invasive tool for monitoring the physiological state of cells, or for studying the control of intercellular dynamics.